Term
Triceps Brachii
TG 97
WB 30-32
ORIGIN
INSERTION
ACTION |
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Definition
Triceps Brachii
*moves from medial to lateral from origin to insertion
ORIGIN - Long Head = Infraglenoid tubercle of the scapula
Lateral Head = Posterior proximal humerus, lateral to the spiral groove
Medial Head = Posterior distal humerus; medial to the spiral groove
INSERTION -Olecranon process of the ulna
ACTION - Extension of the elbow
Long head only = extension of the shoulder |
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Term
Anconeus
TG 139
WB 55, 63
ORIGIN
INSERTION
ACTION |
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Definition
Anconeus
*Fibers extend medially and disyally making a triangle
ORIGIN - Posterior aspect of the lateral condyle of the humerus
INSERTION - Olecrenon process of ulna and the posterior surface of the ulna
ACTION - Extension of the elbow |
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Term
Suraspinatus
TG 74
ORIGIN
INSERTION
ACTION |
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Definition
Supraspinatus
ORIGIN - Supraspinus fossa of the scapula
INSERTION - Greater tubercle of the humerus
ACTION - 1. Abduct humerus 2. Stabilize the head of the humerus |
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Term
Infraspinatus
TG 74
ORIGIN
INSERTION
ACTION |
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Definition
Infraspinatus
ORIGIN - Infraspinus process of the scapula
INSERTION - Greater tubercle of the humerus
ACTION - 1. Lateral rotation of the shoulder 2. Adduct the shoulder 3. Stabilize head of humerus |
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